package com.zxt.util;

/**
 * projectName:day11_booksystem
 * author:ZhangXiaoTeng
 * time:2021/11/27 14:35
 * description:
 */
public class StringUtils {
    public static boolean isEmpty(String str){
        return str==null||str.trim().length()==0?true:false;
    }
}
